System and method for sub-sea cable termination

Patent metadata

Field	Value
Publication number	US-9306340-B2
Application number	US-201314105205-A
Country	US
Kind code	B2
Filing date	Dec 13, 2013
Priority date	Dec 13, 2013
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

An electrical connector includes a first cable termination chamber configured to receive a first power cable having at least a first conductor sheathed at least in part by a first insulating layer and a first insulation screen layer. Also, the electrical connector includes a first non-linear resistive layer configured to be coupled to a portion of the first conductor unsheathed by at least the first insulation screen layer and configured to control a direct current electric field generated in the first cable termination chamber. In addition, the electrical connector includes a first deflector configured to be coupled to the first power cable and control an alternating current electric field generated in the first cable termination chamber.

First claim

The invention claimed is:

1. An electrical connector, comprising:
a first cable termination chamber configured to receive a first power cable comprising at least a first conductor sheathed at least in part by a first insulating layer and a first insulation screen layer;
a first non-linear resistive layer configured to be coupled to a portion of the first conductor unsheathed by at least the first insulation screen layer and configured to control a direct current electric field generated in the first cable termination chamber;
a first deflector configured to be coupled to the first power cable and control an alternating current electric field generated in the first cable termination chamber;
a second cable termination chamber configured to receive a second power cable comprising at least a second conductor sheathed at least in part by a second insulating layer and a second insulation screen layer;
a second non-linear resistive layer configured to be coupled to a portion of the second conductor unsheathed by at least the second insulation screen layer and configured to control a direct current electric field generated in the second cable termination chamber;
a second deflector configured to be coupled to the second power cable and control the alternating current electric field generated in the second cable termination chamber; and
a wet-mate chamber disposed between the first cable termination chamber and the second cable termination chamber, and configured to electrically couple the first power cable to the second power cable, wherein the wet-mate chamber comprises:
a first conducting pin coupled to a first Faraday cage;
a second conducting pin coupled to a second Faraday cage; and
a piston subunit configured to couple the first conducting pin to the second conducting pin.

2. The electrical connector of claim 1 , a wherein the first Faraday cage is configured to be coupled to the first conductor and comprises a first extended conductive arm, and wherein the first extended conductive arm is configured to control the alternating current electric field generated in the first cable termination chamber.

3. The electrical connector of claim 2 , further comprising a first stress cone disposed at one end of the first cable termination chamber and configured to terminate the first insulation screen layer of the first power cable.

4. The electrical connector of claim 3 , wherein the first deflector is disposed within the first stress cone and configured to be coupled to one end of the first insulation screen layer.

5. The electrical connector of claim 2 , wherein the first non-linear resistive layer comprises a first end coupled to one end of the first insulation screen layer and a second end coupled to the first Faraday cage.

6. The electrical connector of claim 1 , a wherein the second Faraday cage is configured to be coupled to the second conductor and comprises a second extended conductive arm, and wherein the second extended conductive arm is configured to control the alternating current electric field generated in the second cable termination chamber.

7. The electrical connector of claim 6 , further comprising a second stress cone disposed at one end of the second cable termination chamber and configured to terminate the second insulation screen layer of the second power cable.

8. The electrical connector of claim 7 , wherein the second deflector is disposed within the second stress cone and configured to be coupled to one end of the second insulation screen layer.

9. The electrical connector of claim 6 , wherein the second non-linear resistive layer comprises a first end coupled to one end of the second insulation screen layer and a second end coupled to the second Faraday cage.

10. The electrical connector of claim 1 , wherein the wet-mate chamber further comprises a stress grading layer disposed at an interface of the piston subunit and the first conducting pin and configured to control the direct current electric field generated in the wet-mate chamber.

11. The electrical connector of claim 10 , wherein the stress grading layer is disposed at an interface of the piston subunit and the second conducting pin and configured to control the direct current electric field generated in the wet-mate chamber.

12. The electrical connector of claim 10 , wherein each of the stress grading layer, the first non-linear resistive layer, and the second non-linear resistive layer comprises a host material and one or more filler materials.

13. The electrical connector of claim 12 , wherein the host material comprises epoxy and silicone rubber and the one or more fillers comprise carbon, zinc oxide, silicon carbide, barium titanate, lead zirconate titanate, or combinations thereof.

14. A method for controlling an electric field in an electrical connector, comprising:
receiving, by a first cable termination chamber, a first power cable comprising at least a first conductor sheathed at least in part by a first insulating layer and a first insulation screen layer;
controlling a direct current electric field generated in the first cable termination chamber by coupling a first non-linear resistive layer to a portion of the first conductor unsheathed by at least the first insulation screen layer;
controlling an alternating current electric field generated in the first cable termination chamber by coupling a first deflector to the first power cable; and
controlling the direct current electric field generated in a wet-mate chamber by disposing a stress grading layer at an interface of a piston subunit and one of a first conducting pin and a second conducting pin.

15. The method of claim 14 , further comprising controlling the alternating current electric field generated in the first cable termination chamber by coupling a first Faraday cage to the first conductor.

16. The method of claim 14 , further comprising:
receiving, by a second cable termination chamber, a second power cable comprising at least a second conductor sheathed at least in part by a second insulating layer and a second insulation screen layer;
controlling a direct current electric field generated in the second cable termination chamber by coupling a second non-linear resistive layer to a portion of the second conductor unsheathed by at least the second insulation screen layer; and
controlling an alternating current electric field generated in the second cable termination chamber by coupling a second deflector to the second power cable.

Assignees

• Gen Electric

Inventors

• Chen Qin
• Yin Weijun
• Zhang Lili

Classifications

• H01R13/523 Primary

  for use under water · CPC title

• H02G15/103

  with devices for relieving electrical stress · CPC title

• H01R13/6592

  the conductive member being a shielded cable · CPC title

• H01R13/665

  with built-in electronic circuit (H01R13/70, H01R13/719 take precedence) · CPC title

• H01R13/6581

  Shield structure · CPC title